Maintenance; Replacing Carbon Brushes; Recycling The Battery - Makita 6918FD Instruction Manual

• Even though the diameters of bolts are the
same, the proper fastening torque will differ
according to the torque coefficient, the class of
bolt and the bolt length.
4. The use of the universal joint or the extension bar
somewhat reduces the fastening force of the impact
wrench. Compensate by fastening for a longer
period of time.
5. The manner of holding the tool or the material of
driving position to be fastened will affect the torque.
6. Operating the tool at low speed will cause a reduc-
tion in the fastening torque.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.

Replacing carbon brushes

Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.
1
After replacing brushes, insert the battery cartridge into
the tool and break in brushes by running tool with no load
for about 1 minute. Then check the tool while running and
electric brake operation when releasing the switch trig-
ger. If electric brake is not working well, ask your local
Makita service center for repair.
001145
1. Limit mark
1
004344
1. Brush holder
cap
2
2. Screwdriver
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized or Factory Service Centers,
always using Makita replacement parts.
Ni-Cd

Recycling the Battery

The only way to dispose of a Makita battery is to recycle
it. The law prohibits any other method of disposal.
To recycle the battery:
1. Remove the battery from the tool.
2. a) Take the battery to your nearest Makita Fac-
tory Service Center
or
b) Take the battery to your nearest Makita
Authorized Service Center or Distributor that
has been designated as a Makita battery
recycling location.
Call your nearest Makita Service Center or Distributor to
determine the location that provides Makita battery recy-
cling. See your local Yellow Pages under "Tools-Electric".
ACCESSORIES
CAUTION:
• These accessories or attachments are recom-
mended for use with your Makita tool specified in
this manual. The use of any other accessories or
attachments might present a risk of injury to per-
sons. Only use accessory or attachment for its
stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Sockets
• Protector
• Extension bar
• Universal joint
• Bit adapter
• Screw bits
• Various type of Makita genuine batteries and charg-
ers
7
EN0001-1